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David Helms Profile picture
@davidhelms570
May 28 • 5 tweets • 4 min read Twitter logo Read on Twitter
Time to update the map @PeterGleick
#WaterIsLife
worldwater.org/conflict/map/
Iran, Taliban exchange heavy gunfire in conflict over water rights on Afghan border #WaterIsLife
pbs.org/newshour/world… Image
@PeterGleick Water Dispute Escalating between Iran and Afghanistan, August 2016
atlanticcouncil.org/wp-content/upl… ImageImage
@PeterGleick THE EMERGING DYNAMICS FOR CONFLICT AND COOPERATION BETWEEN IRAN AND THE TALIBAN OVER THE HELMAND RIVER
9 September 2022
waterpeacesecurity.org/info/blog-09-0… Image
@PeterGleick Iran faces its driest summer in fifty years
July 2021
atlanticcouncil.org/blogs/iransour… Image

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More from @davidhelms570

David Helms Profile picture
May 29
#NAFOWeather 🧵
1/ Weather week in review (23-29 May 2023): Widespread thunderstorms provided significant rain near the Line of Conflict (LoC), with a range of 15-90 mm in the south and 30-100 mm in the east and north. Image
2/ Rainfall from thunderstorms was not uniform with some locations close to the LoC receiving weekly peak total rainfall 80-105 mm including Oleshky, Vuhledar, Bakhmut and Raihorodka. Image
3/ Daily peak rainfall totals from thunderstorms max'ed out at 30-60 mm per day causing local flooding as reported by social media validating satellite precipitation accumulation analysis.
Image
Read 8 tweets
David Helms Profile picture
May 15
1. Soil Moisture Update: 15 May 2023, a #NAFOWeather🧵
I'm "officially" declaring #MudSeason over based on limited rainfall since May 1st & marginal rain forecast in the next 2 weeks. Soil is dry enough to support most vehicles across most of the LoC.
2. Recent Rainfall (past 2 weeks): Donetsk and Luhansk received about 5-15 mm rain of on May 8-9, otherwise, a dry 2 weeks. Image
3. Soil Moisture Change (past 2 weeks): There has been a general soil drying trend from 30 April to 14 May with least moisture in the south and greatest soil moisture in Donetsk. Image
Read 11 tweets
David Helms Profile picture
May 8
#KakhovkaReservoir #KakhovkaHPP Status Follow-up: 8 May 2023. Upon further analysis of 6 May 2023 Sentinel-2 imagery and consultation with @tom_bike @Gergyl & @BruckenRuski, we believe the #KakhovkaReservoir water is "over-topping" the #KakhovkaHPP dam. /1
Time-series loop from 27 March 2023 to 6 May 2023. Note the "brightening" downstream (left side) of the #KakhovkaHPP sluice gates last frame in loop which is water flowing over the top of the dam. Over-topping is particularly evident on the 3 northern most sluice gates. /2
Why is this happening? Recall the Russian occupiers blew up the road and rail deck above the #KakhovkaHPP dam sluice gates on 10 NOV 2022 as part of the RF retreat ("strategic repositioning") from the Dnipro right bank. /3
Read 12 tweets
David Helms Profile picture
May 7
1. Ruschist operation of Kakhovka HPP (K-HPP) dam has been reckless. Kakhovka Reservoir (KR) water level has alternated from record low to record high in just 3 months. Loop (6 FEB-6 MAY 2023) shows sand bars receding with rising KR water. #NAFOWeather🧵
2. These images are of the K-HPP from Left: 6 FEB, and Right: 6 MAY 2023 (enhanced from data included in loop). ImageImage
3. North Crimean Canal intake, Left 20 FEB 2023 Right 6 May 2023: Latest image show water gushing through NCC intake gate at Tavrisk as record KR level is pushing water through gravity fed NCC at high rates. ImageImage
Read 7 tweets
David Helms Profile picture
May 6
1. Russians are once again attempting to frighten residents in occupied Kherson and Zaporizhzhia on the left bank of Kakhovka Reservoir into evacuating. This is part of a larger information operation ahead of the Ukrainian offensive. A #NAFOWeather 🧵
2. TASS reported (some western media repeated) that the Kakhovka HPP dam could burst and this would flood Zaporizhzhia NPP and surrounding communities. This is pure rubbish. If the Kakhovka HPP dam burst, Kakhovka Reservoir would dramatically LOWER as these location are upstream. ImageImage
3. Russian propaganda uses facts, often reported by the west, with other false statements to create an environment of fear and uncertainty. It is TRUE Kakhovka Reservoir is at record high levels and the K-HPP controls water discharge for K reservoir.
Read 15 tweets
David Helms Profile picture
May 5
1. A backgrounder on how soil moisture changes over time. A #NAFOWeather 🧵
2. Soil moisture is one element of the water balance / hydrologic cycle which includes precipitation, terrain, vegetation state, and atmosphere (temperature, humidity, winds, sunshine/solar radiation). Image
3. Rate of soil moisture changes over time:
Over Weeks to Months - Controlled by vegetation growth
Cite: Reference evapotranspiration in water requirement: Theory, concepts, and methods of estimation, Handbook of Hydroinformatics, 2023
sciencedirect.com/book/978012821… Image
Read 13 tweets

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